After doing a dozen or so cruises you get the feel, albeit a personal one, for what constitutes a good cruise or a bad one.
We are active 60+ year olds that enjoy the full gamut of cruising activities on board and off. There's not much we haven't tried or explored in the Caribbean. We like it hot so Alaska was a change and one we feared would be too cold. Forget that. It was cold (Your fleece is your friend) but the scenery was awesome. Don't miss the Mendenhal Glacier and I'd recommend hiking to it and not going on a bus. Tracy Arm Fjord was stunning .... you just ride along and watch the sights.
On to what's important here: Infinity is one of 4 Millennium class ships in Celebrity's fleet. We have sailed her twice. But this cruise was special. As most of you have heard or experienced yourselves on Celebrity cruises, this line tries hard to deliver "Xellence." They succeed most all of the time as far as we are concerned and we have therefore sailed with Celebrity 13 of 17 cruises (Carnival, RCL, MSC and NCL the others).